To find the total square footage of a rectangle, you would multiply the length by the width. In this case, 28 x 80 equals 2240 square feet. So, there are 2240 square feet in a rectangle with dimensions of 28 feet by 80 feet.
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Any positive number that you like, depending on the units in which 28 x 80 are measured.
44.4 square feet.
80 acres = 3,484,800 square feet
You have to multiply the two numbers to get the square footage. In this problem the results will be 6,400 square feet.
400 square feet.
80 square feet.